Question

An object is vibrating at 50 hertz. What is its time period?

• A. 0.02 s
• B. 2 s
• C. 0.2 s
• D. 20.0 s

Answer 1

The correct option is A

0.02 s

Step 1: Given:

An object is vibrating at 50 hertz.

So, frequency, $f=50Hz.$

Step 2: Finding the time period, T using the formula:

We know that $Frequency\left(f\right)=\frac{1}{Timeperiod}$

so

$$\begin{gathered} Timeperiod=\frac{1}{Frequency} \\ 50=\frac{1}{T} \\ T=\frac{1}{50} \\ T=0.02s \end{gathered}$$

Its time period will be 0.02 sec.

Hence, the answer is (A) 0.02 s